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Photosynthesis
This category is for questions about the chemical process in which autotrophic organisms use sunlight, carbon dioxide and water to make glucose, water and oxygen. This process is vital to life and is of great importance in biology.
6,415 Questions
Comare and contract the functions of photosynthesis and respiration?
Photosynthesis is the process by which plants, algae, and some bacteria convert sunlight into chemical energy in the form of glucose, releasing oxygen as a byproduct. Respiration, on the other hand, is the process through which cells break down glucose to produce energy, releasing carbon dioxide and water as byproducts. In essence, photosynthesis is an anabolic process that builds organic molecules using energy from sunlight, while respiration is a catabolic process that releases energy from organic molecules.
What is the pigment in photosynthesis?
The pigment in photosynthesis is chlorophyll. It is a green pigment found in the chloroplasts of plant cells that absorbs sunlight and plays a key role in converting light energy into chemical energy during photosynthesis.
Where in the cell does respiration take place?
Most of cellular respiration occurs within the mitochondria of the cell.
Glycolysis occurs outside of the mitochondria, while the Krebs Cycle and ETC takes place inside the mitochondria.
How is oxygen produced by an light reaction?
Oxygen is produced by a light reaction in plants. This reaction is called Photosynthesis. During photosynthesis, a plant will absorb sunlight and carbon dioxide and convert it into energy and oxygen.
The products of photosynthesis?
The products of photosynthesis are glucose and oxygen. Glucose is used as a source of energy for the plant, while oxygen is released into the atmosphere as a byproduct.
What enables green plants to convert light energy into chemical energy?
chloroplasts
^yes, organelles called chloroplasts which contain a green pigment named chlorophyl. Chloroplasts undergo photosynthesis, in which light excites electrons in photoreceptors and their energy is used to convert CO2 and H2O into O2 and Glucose (C6H12O6)
Photosynthesis is a process where plants and some other organisms convert light energy into chemical energy to produce glucose and oxygen, while respiration is a process where organisms break down glucose to produce energy for cellular activities and release carbon dioxide and water as byproducts. The relationship between the two processes is that they are interconnected in the ecosystem - photosynthesis produces the oxygen needed for respiration, and respiration produces the carbon dioxide needed for photosynthesis.
How are the reactants and products of photosynthesis related to the idea of respiration?
CO2 is absorbed, O2 is released, much like in a mammal respiratory system, O2 is absorbed, CO2 is released. This is the chemical equation of photosynthesis from http://www.purchon.com/chemistry/chemical.htm: Carbon Dioxide + Water = Glucose + Oxygen 6CO2 + 6H2OLight ...........= Chlorophyll C6H12O6This is the chemical equation of cellular respiration from http://www.purchon.com/chemistry/chemical.htm: Glucose + Oxygen = Carbon Dioxide + Water + Energy C6H12O6 +6O2 = 6CO2 + 6H2O +Energy As you can see, the reactants of photosyntheis are the products of cellular respiration, and vise versa. The two chemical equations make a cycle, which sustains plant and animal life. Plants use carbon dioxide in photosynthesis, which produces oxygen through chemical reactions. Plants need carbon dioxide to live, and animals (indluding humans) require oxygen. Therefore, it is a beneficial cycle to both plants and animals. Good luck!
Describe what a photo-system does for photosynthesis?
* Light is absorbed by the antenna pigments of photosystems II and I. * The absorbed energy is transferred to the reaction center chlorophylls, P680 in photosystem II, P700 in photosystem I. * Absorption of 1 photon of light by Photosystem II removes 1 electron from P680. * With its resulting positive charge, P680 is sufficiently electronegative that it can remove 1 electron from a molecule of water. * When these steps have occurred 4 times, requiring 2 molecules of water, 1 molecule of oxygen and 4 protons (H+) are released * The electrons are transferred (by way of plastoquinone - PQ in the figure) to the cytochrome b6/f complex where they provide the energy for chemiosmosis. * Activation of P700 in photosystem I enables it to pick up electrons from the cytochrome b6/f complex (by way of plastocyanin - PC in the figure) and raise them to a sufficiently high redox potential that, after passing through ferredoxin(Fd in the figure), * they can reduce NADP+ to NADPH. The sawtooth shifts in redox potential as electrons pass from P680 to NADP+ have caused this system to be called the Z-Scheme(although as I have drawn the diagram, it looks more like an "N"). It is also called noncyclic photophosphorylation because it produces ATP in a one-way process
Word equation for carbon dioxide?
1 atom of carbon (C) reacts with 2 atoms of oxygen (O2) to form the compound carbon dioxide (CO2).
What molecule is produced as a waste product of the metabolism of glucose by cells?
Carbon dioxide (CO2) is produced as a waste product of the metabolism of glucose by cells during cellular respiration. This process occurs in the mitochondria and is essential for generating energy in the form of ATP.
If a plant is kept under green light for an extended period, its photosynthesis will be affected as green light is not efficiently absorbed by chlorophyll, the pigment responsible for photosynthesis. This can lead to a decrease in the plant's food production as it may not receive the necessary light energy required for photosynthesis.
Where is photosynthesis located?
Photosynthesis occurs primarily in the chloroplasts of plant cells. The chloroplasts contain chlorophyll, a pigment that captures light energy and converts it into chemical energy that can be used by the plant. The process of photosynthesis involves the absorption of sunlight, carbon dioxide uptake, and the production of glucose and oxygen.
How do you measure the rate of photosynthesis?
ANSWER 1
get a beaker full of water then put the plant into it with a test tube of water on it. then put some light an it and blow into the water with a straw. if you see bubbles building up in the tube then you have oxygen.
ANSWER 2
Hi photosynthesis measurer,
Counting the air bubbles that are produced when a plant is in water is perfect for measuring the rate of photosynthesis if you have limited resources and only need rough estimates. However, since bubbles have a variable, undefined volume, counting the number of air bubbles is not precise. You can obtain slightly more accurate results by collecting the air released, and measuring the volume.
If you wish to obtain precise and accurate measurements of the rate of photosynthesis, you could use a Photosynthesis Measurement System. They are instruments that quantitatively measure the rate using an infrared gas analyser to assess the input of CO2 and output of H2O. Some Photosythesis measurement systems (such as the LCpro+) offer the ability to precisely control the environment of the leaf being measured. These instruments maintain the leaf chamber at user-selected concentrations of CO2 and H2O, and can control PAR and temperature. This allows you to conduct detailed experiments on the effects of different conditions on the rate of photosynthesis.
Photosynthesis measurement systems are designed to be portable so you can carry them to field sites (except some models are somewhat heavy for field work. LI-COR's 6400 model weighs 13.5kg!).
Answer 3
Below is a reference site that might be helpful.
What is the byproduct of photosynthesis?
Oxygen is the by-product of photosynthesis. Glucose and oxygen are the final products of the photosynthesis process.
What organelle does photosynthesis take place in?
Photosynthesis takes place in the chloroplast organelle within plant cells. This is where the green pigment chlorophyll captures sunlight and converts it into chemical energy in the form of glucose.
Where does respiration actually take place?
Respiration takes place everywhere in the body. It takes place in the lungs the bronchi, the esophagus, the trachea, blood vessels, in capillaries, in the brain, cells even breath. If you are referring to the exchange of oxygen and carbon dioxide, It actually occurs in the blood stream.
What is the difference between photosynthesis and chemosynthesis?
The difference between the two is that chemosynthesis uses chemicals for Energy instead of the light Energy, or sunlight, as used in photosynthesis.
The difference between the two is that chemosynthesis uses chemicals instead of light energy like photosynthesis.
Photosynthesis is a process by which plants, algae, and some bacteria convert sunlight into energy in the form of glucose. Chlorophyll, a pigment found in chloroplasts, absorbs sunlight and initiates the process. Water is split into oxygen and hydrogen, while carbon dioxide is converted into glucose, releasing oxygen as a byproduct. This process fuels the growth and survival of plants and is essential for the atmosphere's oxygen levels.
Where in the chloroplast do the light dependent reactions take place?
They occur in the thylakoid membranes of the chloroplasts in plant cells. They are light dependent in that they need the energy given off by the sun to "excite" the electrons in order to move down the electron transfer chain, which ultimately prepares them to be used by NADP+ to form NADPH to assist in the light independent cycle. (Calvin Benson Cycle)
Is sunlight necessary to produce chlorophyll?
Yes, sunlight is necessary for the production of chlorophyll in plants. Chlorophyll is a pigment that absorbs sunlight and is crucial for the process of photosynthesis, where plants convert sunlight into energy. Without sunlight, plants would not be able to produce chlorophyll and carry out photosynthesis.
Vanilla sugar does not come from a plant but rather is made by placing split vanilla beans in either regular (granulated) or powdered sugar.
In a few weeks the vanilla essence infuses itself into the sugar & it can then be used in various recipes
The Calvin cycle is the dark reaction in plants, that results in formation of the glucose molecule.
The Calvin Cycle synthesizes G3P
Basically, Photosynthesis is divided up into the Light reactions and the Calvin Cycle. The "photo" part is the light reaction part, and the "synthesis" is the Calvin Cycle.
The Calvin Cycle's whole existence is to produce sugar. It does this with incorporating CO2 to eventually produce G3P, a sugar that can go on to make glucose etc... The Calvin cycle is powered by NADPH and ATP, which come from the light reactions. Of course this is a simplified version, as there are a number of intermediate molecules, but the idea is the same.For more info I would recommend reading Campbell and Reece (6th ed, 2005)
How can you use the products of photosynthesis to help reduce levels of harmful air pollutants?
you can reduce this by trying to reduce air pollution in the gases that get caught in many layers of earth. so the air pollutants cause green house gases, and we can help reduce by riding bikes, saving paper, brown bags, any bottles, glass, and fuel would become rare which we shall always have in the first place.
-Stephanie-advance physics-12-
What is the process called that plants and animals get their energy?
Plants get their energy through photosynthesis, where they convert sunlight into chemical energy. Animals get their energy by consuming plants or other animals and breaking down the organic molecules through processes like respiration to release energy for their cells.
